Corgi, Beacon of Unity

This spell cost {1} less to cast for each creature in
your party.
{w}{u}{r}{g}: Look at the top 6 cards of your
library. You may reveal up to two Cleric, Rogue,
Warrior, Wizard, and/or Ally cards from among
them and put them into exile, as long as those
cards are in exile you may cast them, you may use
mana as though it was mana of any color to cast
these cards. Shuffle your deck.